Search results for "FRAM"

Step-by-Step Growth of HKUST-1 on Functionalized TiO2 Surface: An Efficient Material for CO2 Capture and Solar Photoreduction

2018

The present study reports on a simple preparation strategy of a hybrid catalyst, TiO2/HKUST-1, containing TiO2 anatase nanoparticles (NPs) with tailored morphology and photocatalytic activity coupled with a porous metal-organic framework (MOF), namely HKUST-1, as an advanced material for the CO2 photocatalytic reduction. In detail, TiO2/HKUST-1 catalyst was prepared via an easy slow-diffusion method combined with a step-by-step self-assembly at room temperature. The growth of crystalline HKUST-1 onto titania surface was achieved by functionalizing TiO2 nanocrystals, with phosphoesanoic acid (PHA), namely TiO2-PHA, which provides an intimate contact between MOF and TiO2. The presence of a cr…

Gravity Probe Spin: Prospects for measuring general-relativistic precession of intrinsic spin using a ferromagnetic gyroscope

2020

An experimental test at the intersection of quantum physics and general relativity is proposed: measurement of relativistic frame dragging and geodetic precession using intrinsic spin of electrons. The behavior of intrinsic spin in spacetime dragged and warped by a massive rotating body is an experimentally open question, hence the results of such a measurement could have important theoretical consequences. Such a measurement is possible by using mm-scale ferromagnetic gyroscopes in orbit around the Earth. Under conditions where the rotational angular momentum of a ferromagnet is sufficiently small, a ferromagnet's angular momentum is dominated by atomic electron spins and is predicted to e…

The planar two-body problem for spheroids and disks

2021

We outline a new method suggested by Conway (2016) for solving the two-body problem for solid bodies of spheroidal or ellipsoidal shape. The method is based on integrating the gravitational potential of one body over the surface of the other body. When the gravitational potential can be analytically expressed (as for spheroids or ellipsoids), the gravitational force and mutual gravitational potential can be formulated as a surface integral instead of a volume integral, and solved numerically. If the two bodies are infinitely thin disks, the surface integral has an analytical solution. The method is exact as the force and mutual potential appear in closed-form expressions, and does not invol…

Experimental investigation of anion-π interactions : Applications and biochemical relevance

2015

Chemical communications 52(9), 1778 - 1795(2016). doi:10.1039/C5CC09072E

Anti-mikrobiālās plānās kārtiņas: izgatavošanas tehnoloģija un īpašību noteikšana.

2022

Šī pētījuma galvenais mērķis ir izstrādāt plānās kārtiņas pārklājumu ar anti-mikrobiālām īpašībām. Šim mērķim tika pētīts volframa oksīda un vara kombinētas plānās kārtiņas pārklājums uz PET substrāta, kura struktūras parametru pamatā ir caurspīdīgs ap 120 nm biezs volframa oksīda slānis ar tam virsū uzklātu 20 nm vara slāni, kas, savukārt, ir apsegts ar 120 nm volframa oksīda slāni – WOx/Cu/WOx. Anti-mikrobiālo efektu noteikšanai tika adaptētas testēšanas metodoloģijas JIS Z 2801 “Antimicrobial products-Test for antimicrobial activity and efficacy” (Association JS 2001) un ES ISO 22196 “Measurment of antibacterial activity on plastic surfaces” (ES ISO 22196). Testēšana tika veikta ar E.col…

2014

Viral CD8 T-cell epitopes, represented by viral peptides bound to major histocompatibility complex class-I (MHC-I) glycoproteins, are often identified by “reverse immunology”, a strategy not requiring biochemical and structural knowledge of the actual viral protein from which they are derived by antigen processing. Instead, bioinformatic algorithms predicting the probability of C-terminal cleavage in the proteasome, as well as binding affinity to the presenting MHC-I molecules, are applied to amino acid sequences deduced from predicted open reading frames (ORFs) based on the genomic sequence. If the protein corresponding to an antigenic ORF is known, it is usually inferred that the kinetic …

Identification of a mannoprotein present in the inner layer of the cell wall of Saccharomyces cerevisiae.

1997

Cell wall extracts from the double-mutant mnn1 mnn9 strain were used as the immunogen to obtain a monoclonal antibody (MAb), SAC A6, that recognizes a specific mannoprotein--which we have named Icwp--in the walls of cells of Saccharomyces cerevisiae. Icwp runs as a polydisperse band of over 180 kDa in sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis of Zymolyase extracts of cell walls, although an analysis of the secretory pattern of the mannoprotein shows that at the level of secretory vesicles, it behaves like a discrete band of 140 kDa. Immunofluorescence analysis with the MAb showed that Icwp lies at the inner layer of the cell wall, being accessible to the antibody on…

Framing the 26J: the discursive advertising strategy of Cs on Twitter in the 26J campaign.

2021

Este trabajo analiza la estrategia comunicativa de Ciudadanos para la difusión de sus spots en Twitter durante la campaña de las elecciones generales del 26 de julio de 2016. En la investigación se emplean técnicas de análisis cuantitativo y cualitativo, estas se basan en el modelo discursivo de encuadre de Gallardo-Paúls (2014, 2021) que aquí adaptamos, identificando categorías específicas del lenguaje audiovisual. Los resultados muestran, en primer lugar, que el empleo de Twitter para la difusión del spot electoral fue muy escaso. Por otra parte, la argumentación fundamental que preside la estrategia textual del encuadre fue mostrarse como el partido de la unión y el cambio. En el ámbito …

Bifurcations of links of periodic orbits in non-singular Morse - Smale systems on

1997

The set of periodic orbits of a non-singular Morse - Smale (NMS) flow on defines a link; a characterization of all possible links of NMS flows on has been developed by Wada. In the frame of codimension-one bifurcations, this characterization allows us to study the restrictions a link requires for suffering a given bifurcation. We also derive the topological description of the new link and the possibility of relating links by a chain of this type of bifurcation.

A biocompatible ZnNa2-based metal–organic framework with high ibuprofen, nitric oxide and metal uptake capacity

2020

Metal organic frameworks (MOFs) have received significant attention in recent years in the areas of biomedical and environmental applications. Among them, mixed metal MOFs, although promising, are relatively few in number in comparison with their homometallic analogues. The employment of benzophenone-4,4′-dicarboxylic acid (bphdcH2) in mixed metal MOF chemistry provided access to a 3D MOF, [Na2Zn(bphdc)2(DMF)2]n (NUIG1). NUIG1 displays a new topology and is a rare example of a mixed metal MOF based on 1D rod secondary building units. UV-vis, HPLC, TGA, XRPD, solid state NMR and computational studies indicated that NUIG1 exhibits an exceptionally high Ibuprofen (Ibu) and nitric oxide adsorpt…